Sleeman Breweries is a Japanese-owned Canadian brewery founded by John Warren Sleeman in 1988 in Guelph, Ontario. The company is the third-largest brewing company in Canada. Along with its own Sleeman brands, the company produces under licence the Stroh's family of brands, Maclays Ale and Sapporo Premium beers for sale in Canada. The company's parent Sapporo owns 4.2 per cent of Ontario's primary beer retailer The Beer Store.

Guelph is a city in Southwestern Ontario, Canada. Known as The Royal City, it is roughly 22 km (14 mi) east of Kitchener and 70 km (43 mi) west of Downtown Toronto, at the intersection of Highway 6, Highway 7 and Wellington County Road 124. It is the seat of Wellington County, but is politically independent of it.